Editing Key (cryptography) (section)

== Purpose ==
Since the key protects the confidentiality and integrity of the system, it is important to be kept secret from unauthorized parties. With public key cryptography, only the private key must be kept secret, but with symmetric cryptography, it is important to maintain the confidentiality of the key. [[Kerckhoffs's principle|Kerckhoff's principle]] states that the entire security of the cryptographic system relies on the secrecy of the key.<ref>{{Cite book|last1=Mrdovic|first1=S.|last2=Perunicic|first2=B.|title=Networks 2008 - the 13th International Telecommunications Network Strategy and Planning Symposium |chapter=Kerckhoffs' principle for intrusion detection |date=September 2008|chapter-url=https://ieeexplore.ieee.org/document/6231360|volume=Supplement|pages=1–8|doi=10.1109/NETWKS.2008.6231360|isbn=978-963-8111-68-5 }}</ref>